CN1169186C - Color CRT and color kinescope having same - Google Patents
Color CRT and color kinescope having same Download PDFInfo
- Publication number
- CN1169186C CN1169186C CNB011120487A CN01112048A CN1169186C CN 1169186 C CN1169186 C CN 1169186C CN B011120487 A CNB011120487 A CN B011120487A CN 01112048 A CN01112048 A CN 01112048A CN 1169186 C CN1169186 C CN 1169186C
- Authority
- CN
- China
- Prior art keywords
- shadow mask
- panel
- axis
- main body
- major axis
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/86—Vessels; Containers; Vacuum locks
- H01J29/861—Vessels or containers characterised by the form or the structure thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/86—Vessels and containers
- H01J2229/8613—Faceplates
- H01J2229/8616—Faceplates characterised by shape
- H01J2229/862—Parameterised shape, e.g. expression, relationship or equation
Abstract
The thickness of a face panel is greater at a peripheral edge portion than at a center portion. At the inner surface of the face panel, a curvature radius in a short axis direction on a long axis is set to decrease from the center of the face panel toward a long axis end and, with L representing a distance from the center of the face panel to the long axis end, has a minimal value at a position spaced from the center of the face panel more toward the long axis end than L/2. A phosphor screen on the face panel has phosphor layers and non-emitting black layers and a percentage of the non-emitting black layers per unit area at least in the neighborhood of a diagonal axis end of the face panel is equal to or smaller than that at the center portion of the face panel.
Description
Technical field
The colour display tube dence that the present invention relates to possess the color cathode ray tube of shadow mask and possess color cathode ray tube.
Background technology
Usually, color cathode ray tube has the panel that is roughly rectangle that the significant surface periphery that is included in the curved surface formation is provided with the shirt rim, and the vacuum casting of the glass that is connected with shirt rim awl.Form on the inner surface of panel significant surface and have the not phosphor screen of luminescent layer of 3 look luminescent coatings and black.Again, relative with this phosphor screen, at the inboard configuration of panel shadow mask, this shadow mask has the shadow mask main body that is roughly rectangle of the curved surface formation that forms many electron beam through-holes and the shadow mask frame that is roughly rectangle that is installed in the shadow mask main body periphery.
On the other hand, in the neck of glass awl, set the electron gun that to launch 3 beam electrons bundles.And the 3 beam electrons bundles that electron gun sends carry out level, vertical scanning, color display by shadow mask to phosphor screen in the effect deflect in the magnetic field that the arrangement for deflecting that is installed on the glass awl outside takes place.
Usually, in order on the phosphor screen of color cathode ray tube, to show the image do not have misalignment, the electron beam that must make the electron beam through-hole by shadow mask respectively correctly shield in fluoroscopic 3 look luminescent coatings.For this reason, must the correct interval (q value) that keeps between panel and the shadow mask.
In recent years, mirror, require the shape of panel outer surface is made larger radius of curvature, make the surface near the plane for the visual characteristic and the minimizing external light that improve colored cloudy look ray tube.Again, want to realize counter plate correct during screen, the radius of curvature that forms the shadow mask main body of electron beam through-hole also must be done greatly.
But in case the radius of curvature of shadow mask main body is done greatly, the intensity of curved surface just descends, and in manufacturing process the shadow mask distortion can take place, and the colorimetric purity of produced color cathode ray tube is degenerated greatly.
Again, the color cathode ray tube of shadow mask type, according to its operation principle, it is 1/3 of the electron gun electron beam total amount of launching that the electron beam through-hole by shadow mask arrives fluoroscopic electron beam, remaining electron beam and shadow mask bump become heat energy, and shadow mask is heated.Consequently, thermal expansion makes shadow mask arch upward to phosphor screen one side, promptly takes place so-called " arching (doming) phenomenon ".
In case surpass allowed band owing to the arching phenomenon makes the interval between phosphor screen and the shadow mask, electron beam to the landing position of luminescent coating deviation can take place, colorimetric purity can degenerate.Particularly under the situation that shows local high briliancy image graphics, on shadow mask, produce the part and arch upward, locality can take place at short notice the big situation of screen deviation change.Under the situation that the radius of curvature of shadow mask main body strengthens, aforesaid locality arches upward also bigger.
As its countermeasure, if adopt the disclosed cathode ray tube of U.S. Pat P60256767, the shape of panel inner surface and shadow mask main body can be made the radius of curvature infinity of long axis direction, and the cylindric curved surface of curvature is only arranged on short-axis direction.Adopt this structure, roughly can solve the problem of mask arch and aperture mask curved surface intensity.
But, to take under the situation of said structure, the influence of ambient light reflection becomes big between panel inner surface and the phosphor screen, and the contrast of image descends.This can be used in the method improvement that is provided with the optical filtering that selectively makes light transmission between panel inner surface and the phosphor screen, but optical filtering is set manufacturing cost is risen, and needs new production equipment simultaneously again.
And when optical filtering not being set wanting to make contrast to improve, must utilize the glass of transmissivity about 50% to make panel.In this case, the luminance ratio central authorities of panel periphery are low, and the briliancy uniformity degenerates.
Summary of the invention
The present invention does in view of above-mentioned existing problems, and its purpose is, provides the quality of panel inner surface reflection external light good, and can alleviate electron beam and the color cathode ray tube of the colorimetric purity deterioration that the screen deviation causes and the color picture tube that possesses this pipe.
In order to achieve the above object, color cathode ray tube of the present invention comprises
Possess the outer surface that general planar is arranged and form fluoroscopic inner surface, vertical orthogonal major axis simultaneously and minor axis with tubular axis, with a pair of long limit of above-mentioned major axis almost parallel and with the vacuum casting of the panel that is roughly rectangle of the minor face of above-mentioned minor axis almost parallel; Relative with described phosphor screen, be arranged at the shadow mask in the described vacuum casting; And be arranged in the described vacuum casting, by the electron gun of described shadow mask to described fluorescence emission electron beam,
The wall thickness of described panel is done so that peripheral part is thicker than middle body,
Inner surface at described panel, on the minor axis along the radius of curvature of short-axis direction along with to the edge of short-axis direction near and reduce gradually, having minimum value above L/2 near on the position of longitudinal end one side from panel central authorities in the radius of curvature along short-axis direction on the described major axis, described L is the distance from panel central authorities to the major axis end
Described panel satisfies following relational expression, promptly
TD＜2.5Tc
Tv＜2.0Tc
TH＜2.0Tc
Wherein Tc is the wall thickness of described panel central portion, and TD is the wall thickness of diagonal angle effective diameter end, and Tv is the wall thickness of minor axis effective diameter end, and TH is the wall thickness of major axis effective diameter end.
Again, adopt color cathode ray tube of the present invention, in the minor axis of described panel and the zone between the minor face, the difference of the wall thickness on wall thickness on the described major axis on the section parallel with minor axis and the described long limit is having maximum above L/2 near on the position of minor face one side from panel central authorities.
Adopt color cathode ray tube of the present invention,, having minimum value above L/2 near on the position of longitudinal end one side from panel central authorities in the radius of curvature on the described major axis along long axis direction at the inner surface of described panel.
Adopt color cathode ray tube of the present invention, the radius of curvature along the direction parallel with described minor axis of described panel inner surface is set at, at least the zone of the described longitudinal end one side extension L/2 from the mediad of panel, this radius of curvature gradually reduces to described long limit from described major axis.
Adopt color cathode ray tube of the present invention, the shadow mask main body of shadow mask also forms the shape roughly the same with above-mentioned panel inner surface.
Adopt color cathode ray tube that constitutes as mentioned above and the color picture tube that possesses this color cathode ray tube, by curvature with suitable condition enactment shadow mask main body and panel surfaces externally and internally, can obtain the performance of good visual performance and panel inner surface reflection external light, and can alleviate that color cathode ray tube colorimetric purity that the arching of shadow mask when color cathode ray tube work causes degenerates and manufacturing process in the electron beam that causes of the shadow mask main body distortion that takes place and shield phenomenons such as colorimetric purity that deviation brings degenerates.
Other purpose of the present invention and advantage will be described below, and wherein a part is conspicuous in specification maybe can draw from enforcement of the present invention.Objects and advantages of the present invention can be by the means hereinafter pointed out and in conjunction with realizing and drawing.
Most preferred embodiment of the present invention is shown and constitutes the accompanying drawing of the part of this specification, and above explanation and following detailed description to most preferred embodiment describe principle of the present invention.
Description of drawings
Fig. 1 is the profile of the color picture tube of the invention process form.
Fig. 2 is the plane graph of the colour cathode ray tube of described color picture tube.
Fig. 3 is the fluoroscopic local amplification view of described color cathode ray tube.
Fig. 4 is the stereogram that model utility is represented described panel part.
That Fig. 5 represents to compare with described panel central portion, with the pipe complexion (BlackUniformity) and the inhomogeneity evaluation result of briliancy of the corresponding picture of the wall thickness of periphery.
Fig. 6 A represents the radius of curvature along short-axis direction of the effective portion of described panel inner surface.
Fig. 6 B is the stereogram that model utility is represented described effective portion inner surface.
Fig. 7 A represents the radius of curvature along short-axis direction of the effective portion of described panel inner surface.
Fig. 7 B is the stereogram that model utility is represented described effective portion inner surface.
Fig. 8 A represents the radius of curvature along long axis direction of the effective portion of described panel inner surface.
Fig. 8 B is the stereogram that model utility is represented described effective portion inner surface.
Fig. 9 A is the Thickness Distribution table of the effective portion of described panel.
Fig. 9 B is the table of the wall thickness difference of the effective portion of the described panel of expression.
Fig. 9 C is the curve of the wall thickness difference of the effective portion of the described panel of expression.
Figure 10 is the plane graph of the shadow mask of the described color cathode ray tube of expression.
Figure 11 is the stereogram that model utility is represented described shadow mask part.
Figure 12 is the beam spot amount of movement comparison diagram that described color cathode ray tube and existing color cathode ray tube, shadow mask arching phenomenon cause.
Figure 13 is described color cathode ray tube and existing color cathode ray tube, shadow mask main body variation comparison diagram.
Embodiment
With reference to the accompanying drawings, the present invention being used for possessing horizontal vertical ratio is that 4: 3, the example of the colour display tube of the color cathode ray tube of Diagonal Dimension 60cm are described in detail.
As shown in Figures 1 and 2, colour display tube dence possesses the basket 8 that is roughly the rectangular box shape, holds the chromatic colour cathode ray tube in this basket.Color cathode ray tube possesses vacuum casting 10.This vacuum casting 10 has panel 12 and glass awl 14.Panel 12 is by the live part that is roughly rectangle 16 of the outer surface with general planar and erect the shirt rim portion 18 that is arranged on the live part periphery and constitute.Again, panel 12 have with the major axis (X-axis) of tubular axis Z quadrature and with the minor axis (Y-axis) of this major axis and tubular axis quadrature.Glass awl 14 is connected with this shirt rim portion 18.Again, panel 12 adopts the glass of transmissivity below 60% to make.
As shown in Figure 3, effective portion 16 inner surfaces of panel 12 form comprise turn blue, 3 colour band shape luminescent coatings 11 of green, ruddiness and be formed at the black phosphor screen 20 of luminescent layer 17 not of band shape in the gap of these luminescent coatings.
As shown in Figure 1, in vacuum casting 10, panel 12 inboard configuration shadow masks 22.This shadow mask 22 has relative with phosphor screen 20 and forms the shadow mask main body that is roughly rectangle 34 of many electron beam through-holes 42 and support the shadow mask frame that is roughly rectangle 35 of shadow mask main body edge part.And the shadow mask 22 utilization a plurality of outstanding pin 30 that makes shirt rim portion 18 inner surfaces that are arranged at panel 12 be installed in method loading and unloading that a plurality of elasticity supports 32 on the shadow mask 35 block and prop up freely and be held in panel 12 inboards.In the neck 15 of glass awl 14 electron gun 24 that can launch 3 beam electrons bundle 17B, 17G, 17R is set again.
Glass awl 14 be peripherally equipped with arrangement for deflecting 26, connecting deflection circuit 7 on this arrangement for deflecting.Connecting power circuit 6, amplifying circuit 5, the signal circuit 4 that drives electron gun on the electron gun 24 again.And these circuit 4～7 constitute drive circuit of the present invention.
In color cathode ray tube, the 3 beam electrons bundle 17B that electron gun 24 is launched, 17G, 17R carry out horizontal sweep and vertical scanning by 22 pairs of phosphor screens of shadow mask 20, with this color display in the action of a magnetic field deflect that arrangement for deflecting 26 takes place.
In above-mentioned color cathode ray tube, as shown in Figure 4, the wall thickness of panel 12 effective portions 16 is made the periphery structure thicker than central authorities.For example, in effective portion 16, the wall thickness T c that gets central portion is 12.5mm, the wall thickness T D of the effective diameter end of diagonal axis D direction is 28.3mm, the wall thickness T V of short-axis direction effective diameter end is 22.0mm, and the wall thickness T H of major axis directions X effective diameter end is 21.9mm, is set as follows relation:
TD＝2.26Tc
TV＝1.76Tc
TH＝1.75Tc
In effective portion 16, to do the wall thickness of periphery than under the thick situation of central portion, the briliancy of picture periphery descends.Again, in order to reduce external reflection of light on the interface between panel 12 inner surfaces and the phosphor screen 20, when utilizing the low glass of transmissivity, for example transmissivity glass below 60% to form panel 12, the operating state performance of cathode ray tube is big with the luminance difference of periphery for the central authorities of the effective portion 16 of panel, picture briliancy lack of homogeneity.
Fig. 5 represents that the transmissivity of panel 12 central portions gets 50%, the black of phosphor screen 20 central portion per unit areas not luminescent layer 17 shared ratios (calling " BLK " in the following text) gets 45%, and the inhomogeneity evaluation result of briliancy of picture when effectively the wall thickness of portion's 16 peripheries is with respect to the color (the Black Uniformity of picture when color cathode ray tube is not worked) of tube-surface under the vicissitudinous situation of wall thickness of effective portion 16 central portions and color cathode ray tube work.In Fig. 5, zero expression is good, and △ represents fair, and * expression is bad.
According to above-mentioned evaluation result, if adopt this example, then the wall thickness T D of the wall thickness T H of the wall thickness T v of the wall thickness T c of central portion, minor axis effective diameter end, major axis effective diameter end and diagonal angle effective diameter end is set in the scope that satisfies following relation, promptly
TD＜2.5Tc
TV＜2.0Tc
TH＜2.0Tc
Also have, because the distance at the effective portion of distance 16 centers is big, so compare with minor axis end, longitudinal end, wall thickness can be set greatlyyer at the diagonal axis live end.
Again, in order to reduce of the decline of effective portion 16 peripheries with respect to the central portion briliancy, set the BLK of the effective end, diagonal angle at least in effective portion 16 peripheral parts to such an extent that equate or littler than the latter with the BLK of central portion.In this example, the BLK of central portion is under 45% the situation, and making the BLK of periphery is 41% at minor axis effective diameter end, is 51% at major axis effective diameter end, is 42% at diagonal angle effective diameter end, with this degree of briliancy uniformity variation is alleviated.
The outer surface of panel 12 effective portions 16 is made the face that radius of curvature is set at the general planar more than 10 meters.Again, effectively the radius of curvature of portion's 16 inner surfaces is set according to following method.Promptly shown in Fig. 6 A solid line A-D, and shown in Fig. 6 B, radius of curvature on the minor axis Y along short-axis direction, near the central authorities of effective portion 16 is about R2200, and slowly diminish to periphery along short-axis direction, near the centre of major axis X and long limit 16a is about R1800, and outermost is about R1000 in effective portion.
As shown in Figure 2, the relation of the portion's outermost of the relation of aforesaid radius of curvature along minor axis Y direction that is central authorities＞pars intermedia＞effectively is extended to the zone of L/2 from the central authorities of effective portion, and wherein L is the distance till from the center of effective portion 16 to major axis X live end.Again, shown in some locking wire C-F among Fig. 6 A, at minor face 16b, radius of curvature along minor axis Y direction, near central authorities is about R3300, is about R3200 near middle, and outermost is about R3000 in effective portion, be roughly single radius of curvature, or the radius of curvature of expressing greater than 80% function by 2 component of degree n ns.This is because if high-order component is many in above-mentioned function, then can produce waveform at effective portion's inner surface, also can produce waveform in the shape of the effective diameter of minor face 16b.
Shown in Fig. 7 A solid line A '-C ', and for example shown in Fig. 7 B, the radius of curvature of major axis X upper edge minor axis Y direction is set at, and is about R2200 in effective all central authorities of 16, is partly for about R3300 about R2000, at minor face 16b at pars intermedia.Again, minimum value is got near this radius of curvature place the distance of central 2L/3 on from central authorities to major axis effective diameter extreme direction, is about about R1800.In this case, the radius of curvature along short-axis direction on the major axis X has minimum apart from central zone greater than L/2 in the central authorities from effective portion 16 on major axis live end direction.
Also have, the radius of curvature along short-axis direction of major axis X also is that the position that is distal to L/2 from central authorities on being set at from the central authorities of effective portion 16 to the direction of major axis effective diameter end gets final product for minimum.
Again, shown in Fig. 8 A solid line, and for example the radius of curvature along long axis direction that is shown on the major axis X of Fig. 8 B is set at, central portion in effective portion 16 is about R3000, at pars intermedia is about R2300, in effective portion outermost, just minor face 16b partly is R330, is getting minimum value to the major axis live end from the position that central authorities are distal to L/2 from central authorities of effective portion.
The Thickness Distribution of above-mentioned panel 12 effective portions is shown in Fig. 9 A, and is and for example shown in Figure 4, and effective portion 16 of panel 12 makes and satisfies following relation, promptly
(TD-TH)＜(TV-TC)≤(TLM-THM), wherein TC is the wall thickness of central portion, TD is the wall thickness of the effective diameter end of diagonal axis D direction, TV is the wall thickness of the effective diameter end of minor axis Y direction, TH is the wall thickness of the effective diameter end of major axis directions X, THM is along the wall thickness of major axis X apart from the pars intermedia of 120 millimeters in central authorities, and TLM is along the wall thickness of long limit 16a from the pars intermedia of minor axis Y120 millimeter.
That is, shown in Fig. 9 B, Fig. 9 C, when observing on each section parallel of effective portion 16 wall thickness on the major axis X and the wall thickness difference on the long limit 16a with minor axis Y, in the middle of minor axis Y and the minor face 16b near wall thickness difference be maximum
On the other hand, as shown in figure 10, the shadow mask main body 34 of shadow mask 22 has the effective 34a of portion that is roughly rectangle that forms many electron beam through-holes and is positioned at the 34b of atresia portion that does not have through hole on every side of effective portion.And the inner surface of effective portion 16 of effective 34a of portion and panel 12 is made essentially identical shape.
As shown in Figure 10 and Figure 11, shadow mask main body 34 is made the slippage that the each several part of the effective 34a of portion that makes shadow mask main body 34 compares on tubular axis Z direction with center 0 and is satisfied following relation, promptly
ZV＜0.8ZD，ZH＜0.8ZD
Wherein ZD is the slippage of diagonal axis D end, and ZV is the slippage of minor axis Y end, and ZH is the slippage of major axis X end.In this example, for example establishing ZD is 13.0mm, and ZV is 8.9mm, and ZH is 8.8mm, then is set at
ZV＝0.68ZD
ZH＝0.68ZD
Again, shadow mask main body 34, the radius of curvature along short-axis direction on its major axis X is more and more littler from shadow mask main body mediad major axis end, and the distance of establishing from shadow mask main body central authorities 0 to the major axis end is d, then surpasses d/2 from shadow mask main body central authorities and has minimum value by on the position of major axis end one side.Major axis X goes up along the radius of curvature of long axis direction has minimum value above d/2 by on the position of major axis end one side in the central authorities from shadow mask main body 34.And the radius of curvature on the direction parallel with Y-axis of shadow mask 34 main bodys gradually reduces to the long limit of shadow mask main body being set at from major axis X to the zone that major axis end one side is extended d/2 from shadow mask main body central authorities 0.
In the color cathode ray tube that Figure 12 will constitute as mentioned above and the example of existing color cathode ray tube since the amount of movement of the electron-beam point that the arching of shadow mask causes compared.Again, Figure 13 A～Figure 13 C is with the analog result of the displacement of the shadow mask main body under the situation of the about 1G load-carrying of the significant surface of shadow mask main body in the example of the color cathode-ray tube apparatus of this example and existing color cathode ray tube.Figure 13 A represents the transfer amount along each position of minor axis Y of shadow mask main body 34 as shown in figure 10, Figure 13 B represents transfer amount parallel with minor axis Y and each position on the axle of minor axis 90mm, and Figure 13 C represents transfer amount parallel with minor axis Y and each position on the axle of minor axis 180mm.
As can be seen from Figure 12, if adopt the color cathode ray tube of this example, utilize the method for the inner surface and the shadow mask main body that form panel 12 as mentioned above, even then the amount of movement of the beam spot that is caused by the shadow mask arching does not increase yet, can access the result roughly the same with existing color cathode ray tube under the situation that the radius of curvature of the inner surface of effective portion 16 and shadow mask main body increases.Again, by Figure 13 A～Figure 13 C as can be known, the displacement of the shadow mask main body 34 that load-carrying causes can be seen on minor axis Y some deterioration, but then reduces than existing color cathode ray tube at the shadow mask main body periphery.
Under the situation that shadow mask main body 34 deforms, as shown in Figure 3, beam spot 18H, the 18V, the 18D that form on phosphor screen 20 move to fluoroscopic periphery shown in 19H, 19V, 19D respectively.Therefore on the major axis X or on the diagonal axis D,, also be that the deterioration of past more peripheral colorimetric purity is big more even shadow mask main body has only small distortion, and by contrast near minor axis Y deterioration just so not big.Therefore, as mentioned above, if adopt this example, then on minor axis Y some deteriorations can appear, the shadow mask main body periphery then degradation reduce, can access the colorimetric purity identical or even better with existing color cathode ray tube.
Therefore, if adopt color cathode ray tube that constitutes as mentioned above and the color picture tube that possesses this color cathode ray tube, curvature with suitable condition enactment shadow mask main body 34 and panel 12 surfaces externally and internallies, then can access good visual characteristic, and can make the ambient light reflective qualities of panel inner surface good, the electron beam that color cathode ray tube colorimetric purity deterioration that the shadow mask arching causes in the time of can alleviating color cathode ray tube work and the shadow mask main body distortion that takes place in manufacturing process cause the colorimetric purity deterioration that the screen deviation is brought.
Other purposes of the present invention and advantage are to implement easily for the person of ordinary skill of the art.Therefore, the present invention is not subjected to the detail describing and illustrate and the restriction of representative embodiment here in more wide field.Like this, various modification can not exceed scope and the spirit by total inventive concept of claims and equivalent regulation thereof.
Claims (14)
1. a color cathode ray tube comprises
Possess the outer surface that general planar is arranged and form fluoroscopic inner surface, vertical orthogonal major axis simultaneously and minor axis with tubular axis, with a pair of long limit of above-mentioned major axis almost parallel and with the vacuum casting of the panel that is roughly rectangle of the pair of short edges of above-mentioned minor axis almost parallel;
Be arranged at the shadow mask relative in the described vacuum casting with described phosphor screen; And
Be arranged in the described vacuum casting,, it is characterized in that by the electron gun of described shadow mask to described phosphor screen irradiating electron beam,
The wall thickness of described panel is done so that peripheral part is thicker than middle body,
Inner surface at described panel, on the minor axis along the radius of curvature of short-axis direction along with to the edge of short-axis direction near and reduce gradually, having minimum value above L/2 near on the position of longitudinal end one side from panel central authorities in the radius of curvature along short-axis direction on the described major axis, described L is the distance from panel central authorities to the major axis end
Described panel satisfies following relational expression, promptly
TD＜2.5Tc
Tv＜2.0Tc
TH＜2.0Tc
Wherein Tc is the wall thickness of described panel central portion, and TD is the wall thickness of diagonal angle effective diameter end, and Tv is the wall thickness of minor axis effective diameter end, and TH is the wall thickness of major axis effective diameter end.
2. color cathode ray tube according to claim 1 is characterized in that,
In the minor axis of described panel and the zone between the minor face, the difference of the wall thickness on wall thickness on the described major axis on the section parallel with minor axis and the described long limit is having maximum above L/2 near on the position of minor face one side from panel central authorities at least.
3. color cathode ray tube according to claim 1 is characterized in that,
At the inner surface of described panel, having minimum value above L/2 near on the position of longitudinal end one side from panel central authorities in the radius of curvature on the described major axis along long axis direction.
4. color cathode ray tube according to claim 1 is characterized in that,
Described phosphor screen has not luminescent layer of luminescent coating and black, at least near the diagonal axis end of panel the black of per unit area not the ratio of luminescent layer and panel central portion per unit area black not luminescent layer be in equal proportions or the former is less.
5. color cathode ray tube according to claim 1 is characterized in that,
The transmissivity of described panel central portion is less than 60%.
6. color cathode ray tube according to claim 1 is characterized in that,
Described shadow mask possesses relative with described phosphor screen and has the shadow mask main body that is roughly rectangle of many electron beam through-holes and the shadow mask frame that is roughly rectangle of the described shadow mask main body periphery of support,
To described shadow mask main body, the slippage ZD, the slippage Zv of minor axis end, the slippage ZH of major axis end that compare along the diagonal axis end of the described shadow mask main body of described tube axial direction with the height of shadow mask main body central portion satisfy following relational expression, promptly
Zv＜0.8ZD
ZH＜0.8ZD
Simultaneously, radius of curvature at the described short-axis direction in described major axis upper edge is more and more littler from the mediad major axis end of shadow mask main body, surpass d/2 in central authorities and have minimum value near on the position of longitudinal end one side from shadow mask main body, d is the distance from shadow mask main body central authorities to longitudinal end, and the radius of curvature along long axis direction on the described major axis is having minimum value above d/2 near on the position of longitudinal end one side from shadow mask central authorities.
7. color cathode ray tube according to claim 6 is characterized in that,
The radius of curvature of the direction that the edge of described shadow mask main body is parallel with described minor axis is set at, and the zone of the described longitudinal end one side extension d/2 from the mediad of shadow mask main body, this radius of curvature gradually reduces to described long limit from described major axis.
8. a color cathode ray tube comprises
Possess the outer surface that general planar is arranged and form fluoroscopic inner surface, vertical orthogonal major axis simultaneously and minor axis with tubular axis, with a pair of long limit of above-mentioned major axis almost parallel and with the vacuum casting of the panel that is roughly rectangle of the pair of short edges of above-mentioned minor axis almost parallel;
Be arranged at the shadow mask relative in the described vacuum casting with described phosphor screen; And
Be arranged in the described vacuum casting,, it is characterized in that by the electron gun of described shadow mask to described fluorescence emission electron beam,
The wall thickness of described panel is done so that peripheral part is thicker than middle body,
Inner surface at described panel, on the minor axis along the radius of curvature of short-axis direction along with to the edge of short-axis direction near and reduce gradually, radius of curvature at described major axis upper edge long axis direction is having minimum value above L/2 near on the position of longitudinal end one side from panel central authorities, described L is the distance from panel central authorities to the major axis end
Described panel satisfies following relational expression, promptly
TD＜2.5Tc
Tv＜2.0Tc
TH＜2.0Tc
Wherein Tc is the wall thickness of described panel central portion, and TD is the wall thickness of diagonal angle effective diameter end, and Tv is the wall thickness of minor axis effective diameter end, and TH is the wall thickness of major axis effective diameter end.
9. color cathode ray tube according to claim 8 is characterized in that,
In the minor axis of described panel and the zone between the minor face, the difference of the wall thickness on wall thickness on the described major axis on the section parallel with minor axis and the described long limit is having maximum above L/2 near on the position of minor face one side from panel central authorities.
10. color cathode ray tube according to claim 8 is characterized in that,
The radius of curvature along the direction parallel with described minor axis of described panel inner surface is set at, and the zone of the described longitudinal end one side extension L/2 from the mediad of panel, this radius of curvature gradually reduces to described long limit from described major axis at least.
11. color cathode ray tube according to claim 8 is characterized in that,
Described phosphor screen has not luminescent layer of luminescent coating and black, at least near the diagonal axis end of panel the black of per unit area not the ratio of luminescent layer and panel central portion per unit area black not luminescent layer be in equal proportions or the former is less.
12. color cathode ray tube according to claim 8 is characterized in that,
The transmissivity of described panel central portion is less than 60%.
13. color cathode ray tube according to claim 8 is characterized in that,
Described shadow mask possesses relative with described phosphor screen and has the shadow mask main body that is roughly rectangle of many electron beam through-holes and the shadow mask frame that is roughly rectangle of the periphery of supporting described shadow mask main body,
To described shadow mask main body, the slippage ZD, the slippage Zv of minor axis end, the slippage ZH of major axis end that compare along the diagonal axis end of the described shadow mask main body of described tube axial direction with the height of shadow mask main body central portion satisfy following relational expression, promptly
Zv＜0.8ZD
ZH＜0.8ZD
Simultaneously, radius of curvature at the described short-axis direction in described major axis upper edge is more and more littler from the mediad major axis end of shadow mask main body, surpass d/2 in central authorities and have minimum value near on the position of longitudinal end one side from shadow mask main body, d is the distance from shadow mask main body central authorities to longitudinal end, and the radius of curvature along long axis direction on the described major axis is having minimum value above d/2 near on the position of longitudinal end one side from shadow mask central authorities.
14. color cathode ray tube according to claim 8 is characterized in that,
The radius of curvature of the direction that the edge of described shadow mask main body is parallel with described minor axis is set at, and the zone of the described longitudinal end one side extension d/2 from the mediad of shadow mask main body, this radius of curvature gradually reduces to described long limit from described major axis.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000085255 | 2000-03-24 | ||
| JP085255/2000 | 2000-03-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1319872A CN1319872A (en) | 2001-10-31 |
| CN1169186C true CN1169186C (en) | 2004-09-29 |
Family
ID=18601617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011120487A Expired - Fee Related CN1169186C (en) | 2000-03-24 | 2001-03-23 | Color CRT and color kinescope having same |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6441566B2 (en) |
| KR (1) | KR100394420B1 (en) |
| CN (1) | CN1169186C (en) |
| TW (1) | TW512386B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6642664B2 (en) * | 2001-03-21 | 2003-11-04 | Koninklijke Philips Electronics N.V. | Method of producing a screen for a color display tube |
| KR100439268B1 (en) * | 2001-12-19 | 2004-07-07 | 엘지.필립스디스플레이(주) | Flat Type Color Cathode Ray Tube |
| KR100443611B1 (en) | 2002-06-26 | 2004-08-09 | 엘지.필립스디스플레이(주) | Panel for crt |
| US7012356B2 (en) * | 2002-07-15 | 2006-03-14 | Lg. Philips Displays Korea Co., Ltd. | Color cathode ray tube |
| US7084561B2 (en) * | 2002-11-20 | 2006-08-01 | Lg.Philips Displays Korea Co., Ltd. | Panel for flat type color cathode ray tube |
| KR100907330B1 (en) * | 2003-01-25 | 2009-07-13 | 엘지.필립스 디스플레이 주식회사 | A Panel for Colar CRT |
| KR100588863B1 (en) * | 2003-06-24 | 2006-06-14 | 엘지.필립스 디스플레이 주식회사 | Flat Type Color Cathode Ray Tube |
| KR100489613B1 (en) * | 2003-06-24 | 2005-05-17 | 엘지.필립스 디스플레이 주식회사 | Flat Type Color Cathode Ray Tube |
| KR100585533B1 (en) * | 2003-06-24 | 2006-05-30 | 엘지.필립스 디스플레이 주식회사 | Flat Type Color Cathode Ray Tube |
| KR100486723B1 (en) * | 2003-07-08 | 2005-05-03 | 엘지.필립스 디스플레이 주식회사 | Color cathode ray tube |
| KR20050091399A (en) * | 2004-03-12 | 2005-09-15 | 엘지.필립스 디스플레이 주식회사 | Cathode ray tube |
| ITMI20050300A1 (en) * | 2005-02-25 | 2006-08-26 | Videocolor Spa | MASK FOR CATHOLIC RAYS IN COLORS |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2534644B2 (en) | 1984-09-13 | 1996-09-18 | 株式会社東芝 | Color picture tube |
| JPH07320652A (en) * | 1994-05-27 | 1995-12-08 | Toshiba Corp | Manufacture of color picture tube and shadow mask |
| TW381286B (en) * | 1996-12-18 | 2000-02-01 | Toshiba Corp | Color cathode ray tube |
| JPH1186751A (en) | 1997-09-05 | 1999-03-30 | Toshiba Corp | Color picture tube |
| JPH11288676A (en) | 1997-12-10 | 1999-10-19 | Toshiba Corp | Color picture tube |
-
2001
- 2001-03-15 US US09/808,167 patent/US6441566B2/en not_active Expired - Fee Related
- 2001-03-15 TW TW090106073A patent/TW512386B/en not_active IP Right Cessation
- 2001-03-22 KR KR10-2001-0014844A patent/KR100394420B1/en not_active IP Right Cessation
- 2001-03-23 CN CNB011120487A patent/CN1169186C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| KR20010090507A (en) | 2001-10-18 |
| TW512386B (en) | 2002-12-01 |
| KR100394420B1 (en) | 2003-08-14 |
| CN1319872A (en) | 2001-10-31 |
| US20020017869A1 (en) | 2002-02-14 |
| US6441566B2 (en) | 2002-08-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1127117C (en) | Color kinescope | |
| CN1169186C (en) | Color CRT and color kinescope having same | |
| CN1705069A (en) | Color picture tube | |
| CN1165950C (en) | Colour cathode-ray tube | |
| CN1073275C (en) | Color cathode ray tube | |
| CN1278362C (en) | Color picture tube | |
| CN1147911C (en) | Color cathode ray tube | |
| CN1263634A (en) | Cathode-ray tube device | |
| CN1154144C (en) | Colour cathode-ray tube | |
| CN1245734C (en) | Colour cathode-ray tube | |
| CN1254176A (en) | Colour cathode-ray tube | |
| CN1218358C (en) | Shadow mask frame of CRT | |
| CN1225765C (en) | Color cathode ray tube | |
| CN1344010A (en) | Shadow type color CRT with flat screen | |
| CN1388560A (en) | Colour cathode-ray tube with improved colour purity | |
| CN1249771C (en) | Colour cathode-ray tube | |
| CN1286139C (en) | Color cathode ray tube | |
| CN1270343C (en) | Cathode ray tube | |
| CN1331482A (en) | Colour CRT | |
| CN1207750C (en) | Colour cathode-ray tube | |
| CN1667784A (en) | Plane cathode-ray tube | |
| CN1279572C (en) | Colour cathode-ray tube | |
| CN1571110A (en) | Deflection yoke and cathode ray tube apparatus provided with the same | |
| CN1100338C (en) | Color cathode-ray tube | |
| CN1747114A (en) | Cathode ray tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |